Pro 1.1 Only shows 8gb ram, has 16gb in it

zerb · 08:24 AM

Bought 8gb of ram. 4x2gb sticks from transintl a few weeks ago. Popped it in, all was well. Ordered the same stuff again Monday, for a total of 16gb, popped it in this evening and noticed that Activity Monitor only shows 8gb of ram still. about this Mac shows 16, geek bench shows 16. But activity monitor only shows 8gb. Issue? Or just a technicality?

saulinpa · Apr 27, 2012, 07:45 AM

You should see all 16. Try this - From the Apple () menu, choose About This Mac - More info - then Memory. It should show all sticks and a status of OK.

zerb · Apr 27, 2012, 08:17 AM

I did that yesterday evening, forgot to take a screen pic, and it did show that all slots were full with 2gb sticks and all said OK.

saulinpa · Apr 28, 2012, 12:22 PM

Strange. I would try re-arranging them to unused slots and see what happens.

zerb · Apr 28, 2012, 07:05 PM

all fixed now. first took the new 8gb out and just had the old stuff in, it registered 8gb so good. took that out, put just the new stuff if...registered 8gb, good. took 2 sticks out and mixed old and new, two sticks per riser...8gb still showing. took it all out, new stuff on one riser, older stuff on the other. and now its seeing all 16gb in activity monitor. so its all good.

makaveli559m · Nov 15, 2012, 12:57 AM

I read your remedy and I tried it on my own Mac Pro and all my RAM read

I bought one used and it needs some work. Now I need the video cards working correctly, also this wierd humming noise. This does help a lot of people I am grateful for the help I get here

Apr 26, 2012, 10:54 PM	#1
zerb macrumors member Join Date: Apr 2012	Pro 1.1 Only shows 8gb ram, has 16gb in it Bought 8gb of ram. 4x2gb sticks from transintl a few weeks ago. Popped it in, all was well. Ordered the same stuff again Monday, for a total of 16gb, popped it in this evening and noticed that Activity Monitor only shows 8gb of ram still. about this Mac shows 16, geek bench shows 16. But activity monitor only shows 8gb. Issue? Or just a technicality? Last edited by zerb; Apr 27, 2012 at 08:24 AM.
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Nov 15, 2012, 12:57 AM	#6
makaveli559m macrumors regular Join Date: Apr 2012	I read your remedy and I tried it on my own Mac Pro and all my RAM read I bought one used and it needs some work. Now I need the video cards working correctly, also this wierd humming noise. This does help a lot of people I am grateful for the help I get here __________________ 15" MBP (mid 2010) Core i5 2.40GHz, 8GB RAM, 500GB Momentus XT Hybrid HD, Nvidia GT330m/ Intel HD.
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Apr 27, 2012, 07:45 AM	#2
saulinpa macrumors regular Join Date: Jun 2008	You should see all 16. Try this - From the Apple () menu, choose About This Mac - More info - then Memory. It should show all sticks and a status of OK.
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Apr 27, 2012, 08:17 AM	#3
zerb Thread Starter macrumors member Join Date: Apr 2012	I did that yesterday evening, forgot to take a screen pic, and it did show that all slots were full with 2gb sticks and all said OK.
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Apr 28, 2012, 12:22 PM	#4
saulinpa macrumors regular Join Date: Jun 2008	Strange. I would try re-arranging them to unused slots and see what happens.
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Apr 28, 2012, 07:05 PM	#5
zerb Thread Starter macrumors member Join Date: Apr 2012	all fixed now. first took the new 8gb out and just had the old stuff in, it registered 8gb so good. took that out, put just the new stuff if...registered 8gb, good. took 2 sticks out and mixed old and new, two sticks per riser...8gb still showing. took it all out, new stuff on one riser, older stuff on the other. and now its seeing all 16gb in activity monitor. so its all good.
	0